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Finding the Fourth Proportional to 496,759.23, 745,191.90 and 212,479.20

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Solution

The fourth proportional to 496,759.23, 745,191.90 and 212,479.20 is: 318,741.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,759.23 : 745,191.90 = 212,479.20 : x
  2. Step 2: Convert to fraction form
    496,759.23/745,191.90 = 212,479.20/x
  3. Step 3: Cross multiply
    496,759.23x = 745,191.90 × 212,479.20
  4. Step 4: Simplify right side
    496,759.23x = 158,337,778,758.48
  5. Step 5: Solve for x
    x = 158,337,778,758.48/496,759.23
  6. Step 6: Final answer
    x = 318,741.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.